This product is made with a seamless knit fabric that prevents chafing so you can stay comfortable and focused.This tee features ACTIBREEZE technology with strategic body-mapped knitted ventilation zones designed to provide targeted ventilation, advanced breathability, and comfort.It´s complemented by thumbholes on the sleeves for added comfort on your daily runs.At least 50% of the garment´s primary composition is recycled polyester, to reduce waste and carbon emissions.